Adopt commit 4626725 from master: Merge pull request #410 from hrosen4/unsafe-visitPaths-drqs-82551711
Adopt commit 4626725 from master: Merge pull request #410 from hrosen4/unsafe-visitPaths-drqs-82551711

commit 46267250a9e3bed326e477de07f1488c6c18c98c
Merge: dbc0d55 9858f62
Author: mgiroux <mgiroux@bloomberg.net>
Date:   Mon May 16 13:55:13 2016 -0400

    Merge pull request #410 from hrosen4/unsafe-visitPaths-drqs-82551711

    Document lack of thread safety on AIX.

commit 9858f62e761fb64f8212403c4a6438fdae018057
Author: Hyman Rosen <hrosen4@bloomberg.net>
Date:   Mon May 16 12:46:06 2016 -0400

    Document lack of thread safety on AIX.

dharesign/bde,dharesign/bde,che2/bde,che2/bde,bowlofstew/bde,dharesign/bde,bloomberg/bde,bloomberg/bde,bowlofstew/bde,bowlofstew/bde,bloomberg/bde,apaprocki/bde,bloomberg/bde,che2/bde,dharesign/bde,apaprocki/bde,apaprocki/bde,bloomberg/bde,apaprocki/bde,bowlofstew/bde,apaprocki/bde,che2/bde